Dorman 674-297 Catalytic Converter with Integrated Exhaust Manifold

Overview of Dorman Catalytic Converter with Integrated Exhaust Manifold

The Dorman 674-297 catalytic converter with integrated exhaust manifold is designed for select Lexus and Toyota models, including the Avalon, Camry, ES300h, NX300h, and RAV4. This one-piece exhaust component combines durability and precise fitment to support your vehicle's emission control system.

• One-piece catalytic converter with integrated exhaust manifold
• Natural stainless steel finish with 0.185 tube wall thickness
• Converter body length of 4.5 inches and overall length of 20.5 inches
• Flanged inlet and outlet with rectangular inlet port and round outlet port
• Ceramic substrate material for effective emission filtration
• Includes inlet and outlet flanges, gaskets, springs, and mounting hardware
• Equipped with 4 sensor ports for accurate monitoring

Detailed Product Description

The Dorman 674-297 catalytic converter with integrated exhaust manifold is engineered to meet the specific exhaust requirements of Lexus and Toyota vehicles such as the Avalon, Camry, ES300h, NX300h, and RAV4. Constructed from stainless steel, this one-piece converter features a durable 0.185-inch tube wall thickness and a ceramic substrate designed to reduce harmful emissions effectively. The converter body measures 4.5 inches in length, while the overall length is 20.5 inches, ensuring proper fitment within the exhaust system.

The flanged inlet and outlet ports provide secure connections, with the inlet shaped rectangular and the outlet round to match OEM specifications. This part includes 7 inlet and 7 outlet mounting holes, along with the necessary gaskets and hardware to facilitate installation. Four sensor ports allow for integration with your vehicle’s emission monitoring system, maintaining compliance with engine management requirements.

Common Applications and Problem Resolution

• Replacement for damaged or clogged catalytic converters in Lexus Avalon and Toyota Camry exhaust systems
• Restores proper exhaust flow and reduces emissions in hybrid models like the ES300h and NX300h
• Addresses exhaust leaks caused by manifold cracks or gasket failure
• Helps resolve check engine light issues related to catalytic converter performance
• Improves overall engine efficiency by maintaining correct exhaust backpressure

Installation Notes and Tips

Ensure the vehicle is cooled down before beginning installation to avoid burns. Verify that the mounting surfaces are clean and free of debris to ensure a proper seal. Use the included gaskets and mounting hardware to secure the converter firmly. It is recommended to inspect oxygen sensors and replace if necessary during installation. Proper torque specifications should be followed to prevent exhaust leaks.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 674-297 catalytic converter with integrated exhaust manifold is constructed from corrosion-resistant stainless steel and features a ceramic substrate for long-lasting performance. While this product is not CARB or New York certified, it is designed to provide reliable emission control for compatible Lexus and Toyota models. Warranty details should be confirmed with the product documentation or supplier.